/**
 * UserController.java
 *
 * @author: ZhuJiahui
 * @date: 2018/12/21 20:46
 */
package com.zhujiahui.sbl.web.restful.controller;

import com.zhujiahui.sbl.web.restful.domain.User;
import org.springframework.web.bind.annotation.*;

import java.util.*;

/**
 * @description:
 * @author: ZhuJiahui
 * @version: 1.0
 */
@RestController
@RequestMapping(value = "/users")     // 通过这里配置使下面的映射都在/users下
public class UserController {
    // 创建线程安全的Map
    static Map<Long, User> userMap =
            Collections.synchronizedMap(new HashMap<Long, User>());

    @RequestMapping(value = "/", method = RequestMethod.GET)
    public List<User> getUserList() {
        // 处理"/users/"的GET请求，用来获取用户列表
        // 还可以通过@RequestParam从页面中传递参数来进行查询条件或者翻页信息的传递
        List<User> userList = new ArrayList<User>(userMap.values());
        return userList;
    }

    @RequestMapping(value = "/", method = RequestMethod.POST)
    public String postUser(@ModelAttribute User user) {
        // 处理"/users/"的POST请求，用来创建User
        // 除了@ModelAttribute绑定参数之外，还可以通过@RequestParam从页面中传递参数
        userMap.put(user.getId(), user);
        return "success";
    }

    @RequestMapping(value = "/{id}", method = RequestMethod.GET)
    public User getUser(@PathVariable Long id) {
        // 处理"/users/{id}"的GET请求，用来获取url中id值的User信息
        // url中的id可通过@PathVariable绑定到函数的参数中
        return userMap.get(id);
    }

    @RequestMapping(value = "/{id}", method = RequestMethod.PUT)
    public String putUser(@PathVariable Long id, @ModelAttribute User user) {
        // 处理"/users/{id}"的PUT请求，用来更新User信息
        User user1 = userMap.get(id);
        user1.setName(user.getName());
        user1.setAge(user.getAge());
        userMap.put(id, user1);
        return "success";
    }

    @RequestMapping(value = "/{id}", method = RequestMethod.DELETE)
    public String deleteUser(@PathVariable Long id) {
        // 处理"/users/{id}"的DELETE请求，用来删除User
        userMap.remove(id);
        return "success";
    }

}
